<template>
  <div class="star"
    :class="starType">
    <span v-for="(itemClass, index) in classItems"
      :key="index"
      :class="itemClass"
      class="star-item"></span>
  </div>
</template>

<script>
const LENGTH = 5
const CLS_ON = 'on'
const CLS_HALF = 'half'
const CLS_OFF = 'off'

export default {
  components: {},
  props: {
    indexf: Function,
    size: {
      type: Number
    },
    score: {
      type: Number
    }
  },
  data () {
    return {}
  },
  watch: {},
  computed: {
    starType () {
      return 'star-' + this.size
    },
    classItems () {
      let result = []
      let score = Math.floor(this.score * 2) / 2
      let hasDecimal = score % 1 !== 0
      let integer = Math.floor(score)
      for (let index = 0; index < integer; index++) {
        result.push(CLS_ON)
      }
      if (hasDecimal) {
        result.push(CLS_HALF)
      }
      while (result.length < LENGTH) {
        result.push(CLS_OFF)
      }
      return result
    }
  },
  methods: {},
  created () {

  },
  mounted () { }
}
</script>
<style lang="stylus" scoped>
.star
  /*text-align: center*/
  font-size: 0px
  .star-item
    display: inline-block
    background-repeat: no-repeat
  &.star-48
    .star-item
      width: 20px
      height: 20px
      margin-right: 22px
      background-size: 20px 20px
      &.on
        bg-image('star48_on')
      &.half
        bg-image('star48_half')
      &.off
        bg-image('star48_off')
      &.last-child
        margin-right: 0px
  &.star-36
    .star-item
      width: 15px
      height: 15px
      margin-right: 6px
      background-size: 15px 15px
      &.on
        bg-image('star36_on')
      &.half
        bg-image('star36_half')
      &.off
        bg-image('star36_off')
      &.last-child
        margin-right: 0px
  &.star-24
    .star-item
      width: 10px
      height: 10px
      margin-right: 3px
      background-size: 10px 10px
      &.on
        bg-image('star24_on')
      &.half
        bg-image('star24_half')
      &.off
        bg-image('star24_off')
      &.last-child
        margin-right: 0px
</style>
